What was found
FLIGHT DECK TEMP CONTROL INOP. ZONE TEMP CAUTION EXTINGUISHES ON RESET. GROUNDED - YES. REMOVED AND REPLACED ZONE TRIM AIR MODULATING VALVE (V143). REF. B737-800 AMM 21-61-21. ORIG SUB DATE: 1/24/2023
- Difficulty date
- January 20, 2023
- Submitted
- February 1, 2023
- Operation
- Air carrier
- Aircraft
- N517AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35197
- Aircraft time
- 50,662 hours, 14,761 cycles
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Modulating Valve
- Part number
- 3989085
- Part serial
- 22348
- Condition
- Faulted
- Location
- Lt Ac Pack
- Part time
- 3,833 hours, 1,083 cycles
- Stage of operation
- NR
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.